Electric battery.



w. MORRISON. ELECTRIC BATTERY. APPLICATION FILED AUG.11, 1902.4 1,006,494;v Patented O61). 24, 1911.

`2 SHEETS-SHEET 1.

wr fr f l :fill/11111111 W. M oRmsoN. ELECTRIC BATTERY. APPLIOATION FILED AUG. 11, 1902.

Patented. Oct. 24, i911.'

2 SHEETS-SHEET 2.

WILLIAM Monatson, or onion/oo,- immers.

misurato BATTERY.

Specication of Letters Patent. Patented (tot, 247i, limi.

Application led August 11, 1902. Serial No. 119,203; l

To all whom it may. concern: v

lle it known that l, WILLIAM. MORRISON, a citizen of the United States ot' America, and residentV of Chicago, Cook county, Illinois,

have invented a certain Vnew and useful lin-v proveinent in Electric Batteries, of Which the following is a specification.

My invention relates to an improvement in an electric battery which employs or utilizes bromin electrodeposited or placed upon the negative element disposed at, in or near the bottom of the cell so that the high specilic gravity of the brominv tends to cause it to remain upon the negative element. l have described and claimed this invention in another application filed by me concurrently herewith, No. 119,205, and hereinafterv'reerred to, and which application is confined to said bromin gravity cell. In still another application filed concurrently herewith, Noi

119,201, and hereinafter' referred to, l have described and claimed a means ,tor holding the bro-min more stablcupon the negative element consisting in a multiplicity or plu-v ,rality of pockets formed or madein the negative element.y In the present application l desire to illustrate, describe and claim still other means tor holding the bromin still more stable in or upon the negative element.

In carrying out my invention and to pro--h duce a cell in which the bromin is held still more stable upon or in the negative element, which bromin` in its free state is in the form of a liquid, I provide acontaining cell and place Within it a suitable conductor and upon or in this suitable conductor l' place a bed of suitable porous material, such as granular carbon for instance, Which conductor and the porous bed constitute the negative element, saidfnegative element being so disposed that gravity tends to cause the bromin to' remain in contact with the negative element. The liquid bromin which isl electrodepo-sited or placed upon or Within the porous bed, percolates and penetrates into and throughout the interior of the porous bed,thus obtaining an increased area oi' surface Contact between' the negative element and the bromin, and also serving to @Online and hold the bromin uhiformly distributed lupon and throughout the negative element.

By this means the bromin is more securely held Within or by the negative elementand is to a great extent prevented from being removed by the Wash ot' 'the-liquid electrolyte above' it. To still more uniformly and Sabry had the liquid-broma i may employ a multiplicity' or plurality oi' recesses or pockets formed in 'or upon the 'negative element and then lill them with granular 'car'- bon thus providing a negative element made 'up of a multiplicity of pockets and having a porous filling providing a porous bed.

`efeience may 4now be had to the accompanying drawings, in which:

Figure 1 is a perspective rvievv ot the interior of a containing cell showing aportio-not the porous bed disposed in the bottom of the cell. Fig'. 2, is a central cross section through a completed cell. Fig 3, is a perspective vievv of a negative element removed rom the interior of the cell and showing the multiplicity of pockets 'or recesses and the porous bed showing a modification. Fig. f1, is a 'centralcross section vievv of a completed cell, showing a removable negative element made up. or formed of a multiplicity of pockets and. the porous bed. Fig. 5, is an exterior perspective viev'v` of a completed cell. 'Fig'n 6, is a detail secv tional view showing `a carbon cell, the pockets and the porous bed, as shown in Fig'. 3, oit a modified form. j I

. ln Figs. 1 and 21 have shown a cell made otcar'bon, Which cell l have described and claimed in an application tiled concurrently herewith, and Which-cell is desi' nated at A.

Within thecell and upon the conductor' boting band isolates the interior sides of `the carbon cell' from the bromin, and prevents feo an accumulation of that mate-rial at the sides or edges of the negative element, for it is evident that if the bromin Was Velectrodeposited upon the carbon sides of thecell-it would run down upon the negative element and accumulate atv the edges thereof. As described in the application for. the gravity bromin cell, 'and in the other applications, when the bromide of a` metal are used'and the'metal is'electrodeposited upon' the posi- 'tive element, this insulating band also -prevents too great an accumulation of the electrodeposit-ed metal upon or about the edges of the positive element. The positive element D, is held in place upon the annular projectingV rib (l by the spacing strips I-I, Whichwhen the cover J, is in place, bear i upon the top of the positive element. The

terminal J2 is connected by conductor strip 33t-With the positive element and as in this l `yc'a'se the cell is of carbon and therefore itself a'conductor the conductor strip .It may be :secured'tothe exterior of the cell and con- "nectedfiwith the other terminal of .the hat- Ais removable from the interior of the containing cell.v

lio

In Figs. 3 and 4 I have shown a suitable conductor K-having a multiplicity of pock- 4ets K2 or recesses Within which, preferably,

I place granular carbon to provide a negative element consisting of the conductor and a porous bed K3 held Within and by the pockets. In this instance I have shown a containing\'cell K4 made. of glass, Within which is disposed at the bottom thereof the negative element which, in this instance,

The positive element L as shown is in this case supported by an ofset L2f formed in the sides of the non-conducting cell and the negative element is provided with a conducting -terminal L3 leading to the exterior of the cell. In this forni of construction also the other terminalof the battery is connected With the positive element by meansof the conductor strip J3. In this type of cell, as the material of which it is composed'is itself a non-conductor, the insulating band used in'connection with the c arbon cell is unnecessary.

I havethus shown and describedthe application of the porous bed in connection with. a 4carbon cell without pockets in Figs. 1 and 2 and I have also shown in Figs. 3

Y and 4 the porous bed Within pockets in con- 45- nection With a glass cell. It is evident that the porous bed Without pockets of Figs. 1

land 2 in connection with the carbon cell .may also be employed Wit-h pockets in conrous bed ,I may treat the material composing the bed with a suitable solution of silicate of soda and the moment this comes in contact With-the soluble bromid or bromin, bromid of soda and silicic acid or silicon oxid are formed in a gelatinous mass.

The serial numbers of my cospending applications yare as follows: 119,201, 119,202, 119,204., and 119,205.

It will be understood that the positive element I) can be made of any suitable metal.

lVliat vI claim as my invention is:

1. In 'a bromin gravity electric battery, a negative element having a mass of granular porous material providing a porous bcd, and bromin in its free state Within the said porous bed.

2. In an electric gravity-bromin battery, a negative element, in or at the bottom of a containingcell, consisting of a multiplicity or plurality of pockets or recesses, and a granular porous lillingI in said pockets providing a porous mass and. bromin in its free state within the porous mass.

I 3. In a bromin gravity electric battery, a negative element having a mass of granular porous material providing a porous bed, which said negative element is located at or near the bottom of a containing cell, bromin in its'free state Within the said porous bed and a positive element above the negative4 element together with a suitable electrolyte.

4i. In an electric gravity bromin battery, a negative element at or near the bottom ot a containing` cell consisting of a multiplicity or plurality of pockets or recesses, a granular porous filling in said pockets providing a porous mass andbromin in its free state Within the porous mass together with a positive element above the negative element and a suitable electrolyte.

5. In a gravity bromin battery, a cell made of conducting material and a bed of granular carbon in the bottom of said cell and bromin in its free state within said porous mass. p

6. In an electric gravity bromin battery, a containing cell made of conducting material, pockets orlrecesses in the bottom of said cell and granular porous ymaterial Within said pockets or recesses and bromin in its free state Within pockets.v

Signed by me at Chicago, Cook county, Illinois', this 8th day of August, 1902.

WILLIAM MORRISON.

said porous mass and Witnesses:

GHAs. C. BULKLEY, HARRY P. BAUMGARTNER. 

